Lab test
IGF-1 Insulin Blood Test - Growth Hormones
The IGF-1 Insulin Blood Test measures insulin-like growth factor 1 (IGF-1), a hormone produced mainly in response to growth hormone.
- Typical price
- From $129
- Results
- 1-3 business days
- Preparation
- See preparation notes below
- Sample
- Blood draw or sample collection at a local center
About this test
The IGF-1 Insulin Blood Test measures insulin-like growth factor 1 (IGF-1), a hormone produced mainly in response to growth hormone. Because growth hormone levels fluctuate widely, IGF-1 is often used as a more stable indicator of growth hormone activity. This test is used to evaluate suspected growth hormone excess or deficiency and to monitor related conditions. It is interpreted with your age, symptoms, and other hormone results. A healthcare provider should review the result, as normal ranges vary with age.
What this test measures
- Insulin-Like Growth Factor 1 (IGF-1) Measures IGF-1, a hormone that reflects growth hormone activity in the body.
Who this test may be right for
- People being evaluated for suspected growth hormone excess or deficiency.
- Individuals with symptoms their provider suspects may relate to growth hormone levels.
- People being monitored for a known pituitary condition.
- Anyone whose provider wants an indicator of growth hormone activity.
- People with unusual growth patterns or other endocrine concerns being assessed.
Before your visit
- No fasting is required unless your provider gives other instructions.
- Continue your usual medications unless a healthcare provider advises otherwise.
- Tell your provider about any hormone medications or supplements you take.
- Follow the sample collection guidance provided with your kit.
Understanding your results
The report shows your IGF-1 level compared with the reference range for your age. A high level may suggest increased growth hormone activity, while a low level may suggest reduced activity, but results depend heavily on age and must be interpreted with other tests. IGF-1 alone cannot confirm a diagnosis or determine the cause. Discuss any abnormal or unexpected result with a healthcare provider, who can decide whether additional hormone testing is needed.
Order this test online
- Buy online in a few minutes - no doctor's visit needed for most tests.
- Sample collection at a patient service center near you.
- Results are typically ready within 1-3 business days.
- Secure, lab-reviewed results delivered to your account.
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Questions people ask
What does an IGF-1 test measure?
It measures insulin-like growth factor 1, a hormone largely produced in response to growth hormone. Because it is more stable than growth hormone itself, it is often used to estimate growth hormone activity.
Why do normal IGF-1 ranges vary with age?
IGF-1 levels naturally change across the lifespan, generally higher during growth years and lower with age. Your provider interprets the result using age-specific reference ranges.
Is IGF-1 the same as growth hormone?
No, but they are closely related. Growth hormone stimulates IGF-1 production, so IGF-1 is used as an indirect and more stable marker of growth hormone activity.
Do I need to fast before this test?
Fasting is generally not required unless your provider specifically asks you to fast. Follow the collection guidance provided with your kit.
What does the IGF-1 Insulin Blood Test - Growth Hormones measure?
Our IGF-1 blood test is commonly used to measure levels of human growth hormone (hGH) and its activity.
How long do results take?
Most IGF-1 Insulin Blood Test - Growth Hormones results are released in 1-3 business days. Specialty testing can take longer.
Is this test right for me?
This page is educational and not medical advice. Talk to a licensed healthcare provider about which tests fit your situation.
LabBookings is an independent directory. We compare test details and pricing information, but we are not a laboratory and we do not perform testing or provide medical advice. Always talk to a licensed healthcare provider about your results and treatment.
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